Tool-holder.



Patented Sept. 26,1899.

F. BLKENDRIOK.

TOOL HOLDER.

(Application filed. June 28, 1899.)

FIG.3.

ILFIGOL TEIGA;

' WITNESSES.

A YTOHWEYS P IIJTED; STATES.

"PATENT Fries.

FRANK 13.,KENDRICK, oFLnBANoN, NEW HAMPSHIRE.

TOOL-HOLDER SPECIFICATION forming part of Letters Patent No. 633,852,dated September 26, 1899.

Application filed June 28, 1899.

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Be it known that I, FRANK B. KENDRICK, of Lebanon, in the county ofGrafton and State of New Hampshire, have invented a new and ImprovedTool-Holder, of which the following is a full, clean-audexactdescription. My invention relatesto an adjustable pinvise andtool-holder especially adapted for the use of dentists and jewelers. IOThe object of the invention is to construct a device of the characterdescribed that may be operated by one hand and in which springtemperedjaws are provided that automat ically open when released from thepressure 1 5 ofa regulating device, the regulating device also servingto close the jaws upon the tool or object passed between them, andwherein further means are provided for subsequently locking the jaws ingripping or binding engagement with the article they carry.

The invention consists in the novel construction and combination of theseveral parts, aswill be hereinafter fully set forth, and pointed outinthe clarims.

Reference is to be had to theaccompanying drawings, forming a part ofthis specification, in which similar characters of reference in dicatecorresponding parts in all the figures.

Figure 1 is a side elevation of the-improved o device. Fig. 2 is alongitudinal verticalsection through the device, the clamping-jaws beingin an open position. Fig. 3 is a longi tudinal vertical section throughthedevice, the clamping-jaws being shown as closed for 55 engagementwith an object passed between them and not locked; and Fig. 4 is a planview of the device, I The handle A of the tool is preferably madetapering, being largest atits lower or outer 0 end, and at said lowerouter end the handle is provided with longitudinal ribs 10 or isotherwise roughened to afiord a grip for the fingers. A ferrule 'B isintroduced into the larger end'of the handle A, and said ferrule 5'extends beyond the outer end of the handle andis provided with a collar11, that has bearing against the said outer end of the handle, as shownin Figs. 2 and 3. The bore of the ferrule B is in two diameters, thelesser di-' ameter being at the inner end of the ferrule, and at thelesser diameter of the bore of the ferrule a thread 12 is produced.

stratum-722,204.. (Ncmcdelfi A clutch or clamping device 0 isemployed'in' connection with the ferrule B, being adapted to. enter the same.This clutch or clamping device consists of a tube 13, having an with thethread 12 in the ferrule, and the ex terior diameter of the said tube 13is less than the diameter of the. larger portion of the bore and Thetube 13 of the clutch or clamp,- ing device is provided withlongitudinal slots 14, that extendthrough the outer end or head of thesaid, device. These slots are usually four in number, although anydesired number may be employed, and these slots divide the headD of'thedevice into mating and opposing jaws 15. -These jaws 15 are very similarto ordinary cl utch-jaws,- having straight inner edges, and their outersurfaces being beveled or inclined from a point in their length upwardlyand inwardly in direction of the. center of the head and then from saidpoint downwardly and inwardly, as shown at 16 in the drawings.

-.A regulating-sleeveE is used in connection with the clutch or clampingdevice'C, and this regulating-sleeve is provided at its outer end withan interior taper 17, corresponding to the lower tapered portion of thehead D of the clutch or clamping device. The lower portion of theregulating-sleeve is. enlarged in diameter, thus fiorming -a shoulder18, and at the inner end of the said regulating-sleeve a roughenedexterior or knurled surface 19 is formed, enabling the sleeve to beeither turned by the fingers or to be given end movement. Theinner endof the sleeve is mounted to slide over the outer projecting portion ofthe tube orpshank section of the clutch or clamping device 0, whichspring has bearing against the shoulder 18 of the sleeve and against theouter projecting end of the ferrule 13. The spring normally forces theregulating-sleeve E outward, thus normally holding thejaws of the head Dpractically together; but when the sleeve E is drawn in direction of thehandle the jaws of the head I) automaticallysepa rate, owing to thespring character of the material of the, tube 13, of which they form apart, as illustrated in Fig. 2.

The tool may now be passed into the space exterior thread at one endadaptedv to engage of the ferruleB, as is also shown in Figs. 2

ferrule B and a spring 20 is coiled around the a between the jaws of thehead D, and when l ferrule and a regulating-sleeve having slid said toolhas been placed in position between said jaws the sleeve E is releasedand the spring 20forces the sleeve outward and causes the jaws to closeagainst the shank of the tool. The jaws are now locked upon the tool orarticle introduced between them bysiniplyturning the sleeve E, thehandle A being held stationary,and these objects can be accomplished bythe use of one hand. Upon turning the sleeve E when in its initialposition the frictional engagement between the outer end of the sleeveand the head 1) of the clamping device will cause the said clampingdevice to turn also, and when the sleeve is moved in one direction theclamping device will be screwed into the ferrule, and consequently thejaws of the head D will be drawn as far as possible into the outer endof the sleeve E. Then the tool is to be released, the sleeve E is turnedin an opposite direction, thus unscrewing the clamping device 0 from thebandle and causing the jaws of the head D to open to a greater or lessextent, and at the same time the sleeve E is carried away from thecollar 11 of the ferrule. By drawing the sleeve E in direction of thehandle the jaws of said head D will open to their full extent and thetool may be dropped out.

When the device is used as a pin-vise, an opening 21 is madelongitudinally in-the handle, extendingfrom end to end, beingincommunication with the interior of the tube-section of the clutch orclamping device, and preferably the handle A is always provided with thelongitudinal opening 21, so that the device can be used as an ordinaryclutch for light work or as a pin-vise.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl. A pin-vise comprising a handle, a ferrule in saidhandle and having an interior screwthread, a clutch in the form of aslotted spring-tube having its rear end formed with an interior threadfitted to the thread in the ing movement on the clutch and springpressedtoward the outer orsplit end thereof, the said sleeve when pressed outonthe clutch coming into frictional engagement therewith, whereby aturning of the sleeve will screw the clutch into or out of the ferrule,as and for the purpose set forth.

2. A pin-vise and tool-holder comprising a handle, a ferrule having ashoulder between its ends, and inserted in the end of the handle withthe shoulder resting on the edge of the same, the inserted end of theferrule being formed with an interior thread, a clutch in the form of aslotted tube inserted in said ferrule and having a threaded rear endengaging the thread of the ferrule and an inclined head and aregulating-sleeve slidably fitted on the outer end of the ferrule beyondthe shoulder thereof and having its outer end inclined to correspond tothe head of the clutch, the said sleeve being spring-pressed outwardinto frictional engagement with the head of the clutch, as and for thepurpose set forth. I I

3. A pin-vise and tool-holder, consisting of a handle having an apertureextending through the same, a clutch or clamping device eomprising aslotted spring-tube having a screw connection with said handle andterminating in jaws at its outer end, said jaws having their outersurfaces tapered from a given point between their ends upwardly andinwardly and downwardly and inwardly, a regulating-sleeve held to slideupon a portion of the handle and over the tube of the clutch or clampingdevice, one portion of the sleeve being arranged for frictionalengagement with the said jaws, and a spring arranged to normally holdsaid portion of the sleeve in engagement with the said jaws, asdescribed.

FRANK l3. KENDRICK. Witnesses:

LENA MAY TILDEN, WILLARD H. CROZIER.

